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VT2848

General-Purpose Digital I/O Module

The module VT2848 provides 48 inputs or outputs for digital signals. They may be connected directly to the inputs or outputs of an ECU. Also, other digital signals can be measured or controlled using this module, e.g. to control additional parts of a test bench.

This module is also available as a variant (VT2848 FPGA) with user programmable FPGA.

Characteristics

Functions for Each Column

  • Channel individually configurable as input or output channel
  • Sampling of digital input signals with configurable threshold
  • Determination of frequency and duty cycle of PWM signals (on 16 channels)
  • Outputs use transistors to allow endurance tests
  • Autonomous output of a bit stream loaded into module

  • 3 modes for digital output:

    - Push-pull operation against Vbatt or Vext

    - Low-side switch

    - High-side switch against Vbatt or Vext

  • Generation of a PWM signal (on 16 channels)

Technical Data

VT2848
Input of digital signals
 Input voltage0 V … 60 V
 Input impedanceApprox. 200 kΩ
 Threshold0 … 40 V
 HysteresisApprox. 0.2 V
 Sampling interval50 µs
 PMW frequency (PWM measurement)20 mHz … 500 kHz
Output of digital signals
 Supply voltage Vbatt / Vext2 … 60 V
 Input current at Vbatt / VextMax. 7 A
 Output Low 
 – Output voltage (at -20 mA)Max. 0.2 V
 – Output current-200 … 0 mA
 Output High 
 – Output voltage (at 20 mA)Min. Vbatt/Vext -0.9 V
 – Output current0 … 200 mA
 Length of bit stream2 … 4,096 Bit
 Output interval (at Vbatt / Vext ≤ 24 V)5 μs … 65 ms
 Frequency of generated PWM signal 
 – at Vbatt/ext ≤ 60V20 mHz … 10 kHz
 – at Vbatt/ext ≤ 12V20 mHz … 200 kHz
Basic Data
 Supply voltage (via backplane)12 V ±10%
 Power consumptionTyp. 5.8 W
 Temperature range0 … 55 °C
 Dimensions (L x W x H)300 x 173 x 36 mm
 WeightApprox. 460 g
Maintenance
 Calibration recommendedevery 12 months
 Accredited (pre/re) calibration according toISO/IEC 17025:2017

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